getAdminPassword
Returns admin password.
Admin password can be specified using admin_password setting in the server configuration. If this setting is missing, a random ephemeral password will be generated and printed to the log. This password will remain valid for the duration of this server run, it is not persisted in the storage. (This simplifies running the server locally for development).
This method must be called only if runServer was called with needAdminPassword set to true.
Return
admin password
Throws
when runServer was called with needAdminPassword set to false.